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Find the gravitational attraction between two solid lead spheres of 1 kg mass each if the spheres are almost in contact
Determine the molarity of the solution that is prepared as follows: 73.0 g of magnesium of nitrate is dissolved in enough water to make 550.0mL of solution. molarity
The average power dissipated in a 47-? resistor is 2.5 W. What is the peak value I0 of the ac current in the resistor
Methane, CH4, burns in oxygen gas to form water and carbon dioxide. What is the correct balanced chemical equation for this reaction
Calculate the composition and quantity of all phases for a 50 wt % Magnesium - Lead alloy at 435 deg Celsius. Sketch the resulting microstructure, assuming the material was equilibrium cooled from t
Two cars collide at an intersection. Car A, with a mass of 2000kg , is going from west to east, How fast was car A going just before the collision
How many milliliters of an aqueous solution of 0.202 M potassium chloride is needed to obtain 11.4 grams of the salt
A 90 uF capacitor and a 15m H inductor are in series with a 185 O resistor, What is the resonant frequency
You need to make an aqueous solution of 0.191 M zinc sulfate for an experiment in lab, using a 125 mL volumetric flask. How much solid zinc sulfate should you add
In the laboratory you dissolve 15.4 g of zinc acetate in a volumetric flask and add water to a total volume of 500 mL.
You have 2 capacitors plus 1 resistor all hooked up in series. The value of R= 15 ohms and C1=C2= 1uf. Find the time constant T(tau)=RC
Calculate the period of a satellite orbiting the Moon, 130km above the Moon's surface. Ignore effects of the Earth
The molality of a sodium nitrate solution is 1.44 m. What is the mole fraction of NaNO3? The molar mass of NaNO3 is 85.06 g/mol; the molar mass of H20 is 18.02.
A Step-Up transformer with 60 Hz AC power has an input voltage of 1000 V at a current of 2 Amperes, What is the current flowing out of the transformer
Treat 250.0 g of Ca3(PO4)2 with 150.0 g of H2SO4. How many grams of superphosphate could be formed?
An aluminum-alloy rod has a length of 10.006 cm at 23.400°C and a length of 10.024 cm at the boiling point of water, What is the length of the rod at the freezing point of water
How many grams of K2SO4 are there in 243 grams of an aqueous solution that is 28.7 % by weight K2SO4.
Find the molcular heat capacity in units. Does the law hold up? Can you distinguish a metallic element from a nonmetal this way. Metalloids
A spherical cavity of radius 4.31 cm is at the center of a metal sphere of radius 15.0 cm, Determine the electric field at a point 3.06 cm from the center of the cavity
A 12.7??C particle with a mass of 2.90×10?5kg moves perpendicular to a 1.01T magnetic field in a circular path of radius 23.0m, How fast is the particle moving
Using the oxidation numbers of carbons in malate and oxaloacetate, predict if the conversion of malate to oxaloacetate an oxidation or a reduction. You need to show the calculation of the oxidation
To construct a solenoid, you wrap insulated wire uniformly around a plastic tube 14cm in diameter and 55cm in length, What is the total length of wire you will need to meet these specifications
The energy of electron-in-a 1 m box is given as (h^2*n^2)/(8mL^2). find the transition energy form n=3 to n=2. The mass of electron is 9.109e-31 kg and planck constant 6.626e-34 Js
An electron with kinestic energy 1.8 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 27.0 cm, Find the period of the motion
A 0.020-kg bullet is shot horizontally and collides with a 1.35-kg block of wood. The bullet embeds in the block, what was the original speed of the bullet